New sudorule (Sudo Rule) management module

There is a new sudorule (Sudo Rule) management module placed in the plugins
folder:

  plugins/modules/ipasudorule.py

The sudorule module allows to ensure presence and absence of Sudo Rules.

Here is the documentation for the module:

  README-sudorule.md

New example playbooks have been added:

    playbooks/sudorule/ensure-sudorule-host-member-is-absent.yml
    playbooks/sudorule/ensure-sudorule-host-member-is-present.yml
    playbooks/sudorule/ensure-sudorule-hostgroup-member-is-absent.yml
    playbooks/sudorule/ensure-sudorule-hostgroup-member-is-present.yml
    playbooks/sudorule/ensure-sudorule-is-absent.yml
    playbooks/sudorule/ensure-sudorule-is-disabled.yml
    playbooks/sudorule/ensure-sudorule-is-enabled.yml
    playbooks/sudorule/ensure-sudorule-is-present.yml
    playbooks/sudorule/ensure-sudorule-sudocmd-is-absent.yml
    playbooks/sudorule/ensure-sudorule-sudocmd-is-present.yml

New tests added for the module:

  tests/hbacrule/test_sudorule.yml

README-sudorule.md

@@ -0,0 +1,141 @@
+Sudorule module
+===============
+
+Description
+-----------
+
+The sudorule (Sudo Rule) module allows to ensure presence and absence of Sudo Rules and host, hostgroups, users, and user groups as members of Sudo Rule.
+
+
+Features
+--------
+* Sudo Rule management
+
+
+Supported FreeIPA Versions
+--------------------------
+
+FreeIPA versions 4.4.0 and up are supported by the ipasudorule module.
+
+
+Requirements
+------------
+
+**Controller**
+* Ansible version: 2.8+
+
+**Node**
+* Supported FreeIPA version (see above)
+
+
+Usage
+=====
+
+Example inventory file
+
+```ini
+[ipaserver]
+ipaserver.test.local
+```
+
+
+Example playbook to make sure Sudo Rule is present:
+
+```yaml
+---
+- name: Playbook to handle sudorules
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  # Ensure Sudo Rule is present
+  - ipasudorule:
+      ipaadmin_password: MyPassword123
+      name: testrule1
+```
+
+
+Example playbook to make sure sudocmds are present in Sudo Rule:
+
+```yaml
+---
+- name: Playbook to handle sudorules
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  # Ensure Sudo Rule is present
+  - ipasudorule:
+      ipaadmin_password: MyPassword123
+      name: testrule1
+      cmd:
+      - /sbin/ifconfig
+      action: member
+```
+
+
+Example playbook to make sure sudocmds are not present in Sudo Rule:
+
+```yaml
+---
+- name: Playbook to handle sudorules
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  # Ensure Sudo Rule is present
+  - ipasudorule:
+      ipaadmin_password: MyPassword123
+      name: testrule1
+      cmd:
+      - /sbin/ifconfig
+      action: member
+      state: absent
+```
+
+Example playbook to make sure Sudo Rule is absent:
+
+```yaml
+---
+- name: Playbook to handle sudorules
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  # Ensure Sudo Rule is present
+  - ipasudorule:
+      ipaadmin_password: MyPassword123
+      name: testrule1
+```
+
+
+Variables
+=========
+
+ipasudorule
+---------------
+
+Variable | Description | Required
+-------- | ----------- | --------
+`ipaadmin_principal` | The admin principal is a string and defaults to `admin` | no
+`ipaadmin_password` | The admin password is a string and is required if there is no admin ticket available on the node | no
+`name` \| `cn` | The list of sudorule name strings. | yes
+`description` | The sudorule description string. | no
+`usercategory` | User category the rule applies to. Choices: ["all"] | no
+`hostcategory` | Host category the rule applies to. Choices: ["all"] | no
+`cmdcategory` | Command category the rule applies to. Choices: ["all"] | no
+`nomembers` | Suppress processing of membership attributes. (bool) | no
+`host` | List of host name strings assigned to this sudorule. | no
+`hostgroup` | List of host group name strings assigned to this sudorule. | no
+`user` | List of user name strings assigned to this sudorule. | no
+`group` | List of user group name strings assigned to this sudorule. | no
+`cmd` | List of sudocmd name strings assigned to this sudorule. | no
+`cmdgroup` | List of sudocmd group name strings assigned wto this sudorule. | no
+`action` | Work on sudorule or member level. It can be on of `member` or `sudorule` and defaults to `sudorule`. | no
+`state` | The state to ensure. It can be one of `present`, `absent`, `enabled` or `disabled`, default: `present`. | no
+
+
+Authors
+=======
+
+Rafael Jeffman